The Garo Hills Autonomous District Council (GHADC) razed down 6 illegally built houses on Tuesday.
GHADC Deputy Chief Executive Member Nikman Ch Marak said, "They could not show documents to prove ownership of land and continued to occupy the area even after the deadline, so we had to act."
Marak said the repeated encroachment attempts are being made on the council land by people of Assam origin.
"The council is now working closely with local heads, including Nokmas and Rangbah Shnongs, to identify and prevent such activities," he said.
"As Assam has taken strong action against encroachment within its own boundaries, we too must act to protect our land in the border areas," he added.